Conceptid (2) | Preflabel |
---|---|
AHBDM162 | Ash-free dry weight biomass of Gyraulus laevis per unit area of the bed by identification by optical microscopy and gravimetric determination of loss on ignition |
ZBN00628 | Abundance of Gyraulus laevis per unit area of the bed by sieving and picking under an optical microscope |